System information

6 Logical Partitions on System i5
1.2.3 Simple scenario with dedicated and shared capped partitions
Here is a simple example of a 4-way System i5 system with two OS/400 partitions using the
shared processors pool and one AIX partition using 2 dedicated processors.
Table 1-1 System i5 system with two OS/400 partitions
򐂰 As the total number of processing units configured for the OS/400 partitions using the
shared processors pool equals 2.0, the number of OS/400 licenses required is 2.
򐂰 As the number of dedicated processors for the AIX partition is 2, the number of AIX
licenses required is 2.
򐂰 Note that if the AIX partition is powered down, the unused dedicated processors are
added to the shared processors pool, increasing the available processing units from 2.0 to
4.0.
However, the total number of processing units used by OS/400 partitions cannot exceed
2.0 to match the number of purchased licenses.
1.2.4 Normal scenario with shared capped and uncapped partitions
Here is a normal example of a 4-way System i5 system with two OS/400 uncapped partitions
and one AIX capped partition all using the shared processors pool.
Table 1-2 System i5 system with two OS/400 uncapped partitions and one AIX capped partition
򐂰 As the total of maximum virtual processors configured for the uncapped OS/400 partitions
is 3, the number of OS/400 licenses required is 3, although the desired processing unit
total is 2.
򐂰 As the number of processing units configured for the AIX partition is 2.0, the number of
AIX licenses required is 2.
򐂰 Note that here, unused processor resources configured for the AIX capped partition are
available for use by the uncapped partitions, up to the maximum number of virtual
processors configured.
Partition ID - OS Partition Type Processing Units -
Virtual Processors
Licenses
P1 - OS/400 Shared capped 1.5 1.5 + 0.5
= 2
P2 - OS/400 Shared capped 0.5
P3 - AIX Dedicated 2 2
Partition ID - OS Partition Type Processing units -
Virtual Processors
Licenses
P1 - OS/400 Shared uncapped 1.5 - VP=2 2 + 1
= 3
P2 - OS/400 Shared uncapped 0.5 - VP=1
P3 - AIX Shared capped 2.0 2